Versatility of silica used as a ligand: Effect of thermal treatments of silica on the nature of silica-supported alkyl tantalum species

Laurent Lefort, Mathieu Chabanas, Olivier Maury, Damien Meunier, Christophe Copéret, Jean Thivolle-Cazat, Jean-Marie Maurice Basset*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

The tris(neopentyl)neopentylidene tantalum complex reacts with the silanol groups of silica dehydroxylated at temperatures ranging from 300 to 700°C to form well-defined surface organometallic species. For a silica dehydroxylated at 300°C, the amount of available silanols allows the formation of species 3 linked by two covalent bonds to silica, while the dehydroxylation at 700°C leads to the formation of species 2 with only one covalent bond to silica. Dehydroxylation thus constitutes a way to control the hapticity of silica towards organometallic complexes.

Original languageEnglish (US)
Pages (from-to)96-100
Number of pages5
JournalJournal of Organometallic Chemistry
Volume593-594
DOIs
StatePublished - Jan 15 2000

Keywords

  • Catalyst preparation
  • Dehydroxylation
  • Silica
  • Surface organometallic chemistry
  • Surface species
  • Tantalum

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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